55219888 has 20 divisors (see below), whose sum is σ = 107537760. Its totient is φ = 27468224.

The previous prime is 55219861. The next prime is 55219903. The reversal of 55219888 is 88891255.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5608 + ... + 11911.

It is an arithmetic number, because the mean of its divisors is an integer number (5376888).

Almost surely, 2^55219888 is an apocalyptic number.

It is an amenable number.

55219888 is a deficient number, since it is larger than the sum of its proper divisors (52317872).

55219888 is a wasteful number, since it uses less digits than its factorization.

55219888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17724 (or 17718 counting only the distinct ones).

The product of its digits is 230400, while the sum is 46.

The square root of 55219888 is about 7431.0085452784. The cubic root of 55219888 is about 380.8013743683.

The spelling of 55219888 in words is "fifty-five million, two hundred nineteen thousand, eight hundred eighty-eight".